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-   -   Precious Colors (https://e-group.uk.net/forum/showthread.php?t=16617)

Falk 27th August 2011 09:08 PM

Precious Colors
 
A while ago I was fiddling around with some of my precious possessions in one hand and the ZD35 Macro in the other. My main concern wasn't the focus or DOF, but not to drop a stone into the high grass I was standing on :eek: so I could make use of the low standing sun outside ...


http://e-group.uk.net/gallery/data/5..._I2007_800.jpg
Ruby

http://e-group.uk.net/gallery/data/5..._I2011_800.jpg
Saphire

http://e-group.uk.net/gallery/data/5..._I1987_800.jpg
Yellow Saphire

http://e-group.uk.net/gallery/data/5..._I2026_800.jpg
Topas

I was just trying to get some of the gems colors into my pictures. It turned out as being not so trivial as I thought it would be. My altogether 'free hand approche' made it not much easier :rolleyes: But I somehow like these shots and just want to show them off - being a little different then my usual critter stuff, right?!

Jim Ford 28th August 2011 09:39 AM

Re: Precious Colors
 
I've got one of these - you might find it useful:

http://www.7dayshop.com/catalog/prod...ucts_id=111653

It gives a very bright natural sun-like light. Being non-flash, you can position it to get the lighting effect you want.

Jim

wanderer 28th August 2011 03:54 PM

Re: Precious Colors
 
Nice idea. I wonder what difference a polariser would make?
I don't think it would just reduce the highlights but may do something else.
I vaguely remember looking at rocks through polarized light in Geology at University many years ago.

Falk 30th August 2011 11:17 PM

Re: Precious Colors
 
@Jim
Thanks for the link. I did these in the open, because I wanted to use the sun light instead of any artificial light. In fact I had used LED's before that - not like the setup you advised - but some strong and focused headlamp. If you get the WB correct, then it's no big deal at all. But, I was just playing here anyways ...

Quote:

Originally Posted by wanderer (Post 132260)
Nice idea. I wonder what difference a polariser would make?
I don't think it would just reduce the highlights but may do something else.
I vaguely remember looking at rocks through polarized light in Geology at University many years ago.

Duncan,
I used to look quite a bit through a polarizing microscope in my Geological Instute as well *chr actually, I have one worn old fellow pol-mic at home. But those gems just dont fit in it :o
A screw on pol filter is an option I could play with of course. But, as you might recall, it would not do anything like seen in thin sections, because the second (analysator) pol-filter is lacking. I would need polarized light to illuminate the subject, to begin with. The light coming from the computers LCD screen does offer this, but my poor mans gems just lack the clarity to make use of it.

As I said, this was just a play around and I was quite happy with the outcome and the looks ...

wanderer 31st August 2011 01:28 PM

Re: Precious Colors
 
Which goes to show that I'm wildly out of touch.:)

However, I've photographed transparent objects using a light table.
A small one that would hold 20 No. 35mm slides for example.
This provides a uniform light from behind which I've always liked.
As long as there is about 20cm distance between object and light source you should be able to isolate it with DOF.

pandora 1st September 2011 12:41 AM

Re: Precious Colors
 
As I know little about precious gems I won't speculate on their value, Falk.
The colours appear quite vibrant and the diagonal composition of the first two works well.

Falk 29th February 2012 10:42 AM

Re: Precious Colors
 
Mark, their value is not that much - unfortunately. But if it were other then that, I would not own them in the first place.

I was again playing with my recently acquired remote flash, to get used to it. One of the photos taken fits here - a 34ct synthetic (of course!) Alexandrite:
http://e-group.uk.net/gallery/data/5..._K1082_800.jpg
ZD35 Macro, F16, High Key graduation

Floribunda 29th February 2012 11:25 PM

Re: Precious Colors
 
I really like the shot of the Alexandrite.
Fascinating concept.
As a complete aside Falk - I went looking in a gem shop recently to try and get a topaz for my daughter (birthstone) and was surprised to be told that the golden topaz were hard to find now. There were plenty of the blue.

Falk 29th February 2012 11:53 PM

Re: Precious Colors
 
Hi Lyn,
thanks - and yes, I do like that shot too :)

Birthstone?!? I dare not to comment on that concept ... but,
be careful with the 'Golden Topaz' as they are most often Citrin (natural yellow Quartz) or heat treated Amethyst (also Quartz). Blue ones may be synthetic, and serve as substitute for Aquamarine. Lots of fakes out there, so ask questions befor you buy ...!

Topaz is sometimes found in crystalls of several meters in lenght. I can't believe it's worth while to fake this rather cheap gem stone - but they do it anyways.

Falk

Floribunda 1st March 2012 12:06 AM

Re: Precious Colors
 
Quote:

Originally Posted by Falk (Post 153357)
Hi Lyn,
thanks - and yes, I do like that shot too :)

Birthstone?!? I dare not to comment on that concept ... but,
be careful with the 'Golden Topaz' as they are most often Citrin (natural yellow Quartz) or heat treated Amethyst (also Quartz). Blue ones may be synthetic, and serve as substitute for Aquamarine. Lots of fakes out there, so ask questions befor you buy ...!

Topaz is sometimes found in crystalls of several meters in lenght. I can't believe it's worth while to fake this rather cheap gem stone - but they do it anyways.

Falk

LOL Falk - Birthstones - great marketing ploy heh? :)
I ended up purchasing Citrine earrings - not expensive - as daughter wanted the gold stone, and yes - I got the feeling that if you wanted to spend a considerable amount, you would have to know what you were buying.
Must say though, it was very pleasant looking at the huge variety of colourful gems. *yes
I have a piece of Amethyst crystal my daughter purchased when doing part of her Uni degree. You have inspired me to dust it off and see if I can photograph it. A bit outside of my Bird and Rose preference, but another little challenge! :D

Falk 1st March 2012 09:26 AM

Re: Precious Colors
 
Quote:

Originally Posted by Floribunda (Post 153359)
LOL Falk - Birthstones - great marketing ploy heh? :)

Thats one part - and then there is the esotheric thing - which earns HUGE amounts of money, apparently - and when we get there I shall bite my tongue to keep the peace ...

Quote:

Originally Posted by Floribunda (Post 153359)
Must say though, it was very pleasant looking at the huge variety of colourful gems. *yes

You bet! I can't resist them! With money always in short supply I nevertheless had to have one or two gems from every exhibition I went to. This was in my early days at the Uni, studying a somewhat related subject.

Quote:

Originally Posted by Floribunda (Post 153359)
I have a piece of Amethyst crystal ... You have inspired me to dust it off and see if I can photograph it.

Yes do so - and you are invited to post it here.

Cheers, Falk


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